System.Actions.TContainedAction Events
From RAD Studio API Documentation
InheritedProtected
OnChange protected Occurs when one of the action's properties changes.
OnExecute public Occurs when the execute event, of a client linked to the action, fires.
OnGetDeltaStreams protected
OnHint public Occurs when the mouse pauses over a client control or menu item.
OnUpdate public Occurs when the application is idle or when the action list updates.